#include <stdio.h>
#include <time.h>
#include <math.h>
int main(int argc, char const *argv[])
{
    int a = 2,b = 5;
    int temp;
    int st, ed;
    unsigned long long int count = pow(10,9);
    st = time(NULL);
    while(count >= 1) {
        count --;
        temp = a;
        a = b;
        b = temp;
    }
    ed = time(NULL);

    printf("%d\n", ed-st);
    return 0;
}